1785-LTB 可编程逻辑控制器（PLC）

艾伦-布拉德利1785-LT是一种可编程逻辑控制器（PLC）。该控制器特别是PLC 5/15处理器，属于经典PLC 5控制器的更大家族。

1785-LT支持安装多达四（4）个本地机架，其中一（1）个机架为常驻机架。对于远程I/O配置，该处理器最多支持三（3）个RIO机架，其中最多支持十二（12）个物理设备。它具有内置通信接口，例如用于实现本地和远程I/O（RIO）连接的独立扫描仪端口。此外，它还具有一个Data Highway Plus（DH+）通信端口，可以与RIO端口同时使用，以连接到各种设备，例如人机界面（HMI）、监控和数据采集（SCADA）以及网络中用于消息传递功能的协处理器。这些端口也可用于第三方非Allen-Bradley设备。

1785-LT有一个6k字的嵌入式存储器，可以扩展到14K字。它还可以安装可选的内存模块，例如目录号为1785-MR的4K RAM扩展；目录号为1785-MS的8 K RAM扩展和目录号为1785-MJ的8K EEPROM。

凭借配备的内存大小，1785-LT能够使用任何支持的十六（16）通道或三十二（32）通道I/O模块在互补模式下处理多达512个任意组合的I/O或512个输入和512个输出。16通道模块支持2插槽寻址，而2插槽模块支持1插槽寻址。还必须实施IOIO I/O模块配置以验证硬件配置。

如果您将开关设置到ON位置，当检测到通信错误时，连接到此底盘的输出将保持其最终状态，以允许机器继续移动。建议您将开关1设置为关闭位置，以便在检测到任何错误时移除连接到此机箱的输出能量。该模块的最大用户内存字为6K字，并且可扩展至10K或14K。

1785-LT的工作温度为0-60°C（32-140°F）。该模块的储存温度为-40-85°C（-40-185°F）。相对操作和储存湿度为5-95%，无冷凝。艾伦-布拉德利1785-LT的操作冲击为30克（3次脉冲，11毫秒）。非工作冲击为50克（3个脉冲，11毫秒）。该模块具有4 kV接触放电的ESD抗扰度。艾伦-布拉德利1785-LT还遵循电磁兼容性（EMC）标准。1785-LT还通过了EN 50081-2 EMC -通用排放标准，适用于第2部分-工业环境。

1785-LTB

The Allen-Bradley 1785-LT is a Programmable Logic Controller (PLC). This controller is specifically a PLC 5/15 processor that belongs to the larger family of classic PLC 5 controllers.

The 1785-LT features support for installation of up to Four (4) local racks with One (1) rack being the resident rack. For Remote I/O configuration, this processor supports up to Three (3) RIO racks wherein up to Twelve (12) physical devices are supported. It has built-in communication interfaces such as standalone Scanner port for implementing local and Remote I/O (RIO) connection. Additionally, it also has a Data Highway Plus (DH+) communication port which can be used simultaneously with the RIO port to connect to a variety of devices such as Human Machine Interface (HMI), Supervisory Control and Data Acquisition (SCADA) as well as co-processors in the network for messaging functionalities. These ports may also be used with 3rd party, non-Allen-Bradley devices.

The 1785-LT has an embedded memory amounting 6KWords which can be expanded up to 14K Words. It may also be installed with optional memory modules such as 4K RAM expansion with catalog number 1785-MR; 8 K RAM expansion with catalog number 1785-MS and 8K EEPROM with catalog number 1785-MJ.

With the equipped memory size, the 1785-LT is capable of handling up to 512 I/O of any combination or 512 inputs and 512 outputs in complimentary mode using any supported Sixteen (16) channel or Thirty-Two (32) channel I/O modules. 16-channel modules support 2-slot addressing while 1-slot addressing for 2-slot modules. IOIOIO I/O module configuration must be implemented as well to qualify the hardware configuration.

If you set the switch to the ON position, when communication errors are detected, the outputs that are connected to this chassis remain in their final state to allow the movement of the machine to continue. It is recommended that you set Switch 1 to the OFF position to remove the output energy that is connected to this chassis when any errors are detected. The maximum user memory words of this module are 6K words and this is expandable to 10K or 14K.

The operating temperature of the 1785-LT is 0-60 °C (32-140 °F). The storage temperature of this module is -40-85 °C (-40-185 °F). The relative operating and storage humidity is 5-95% without condensation. The Allen-Bradley 1785-LT has an operating shock of 30 g (3 pulses, 11 ms). The nonoperating shock is 50 g (3 pulses, 11 ms). This module has ESD immunity of 4 kV contact discharges. The Allen-Bradley 1785-LT also follows the Electromagnetic Compatibility (EMC) standards. The 1785-LT has also passed EN 50081-2 EMC – Generic Emission Standard for operation in a Part 2 – Industrial Environment.